<template>
<div>
	<div class="search">
		<input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
	</div>
	<div class="search-content" ref="search" v-show="keyword">
		<ul>
			<li class="search-item border-bottom" 
			    v-for="item of list" 
			    :key="item.id"
			    @click="handleCityClick(item.name)"
			    >
				{{item.name}}
			</li>
			<li class="search-item border-bottom" v-show="hasNoData">
				没有找到匹配城市
			</li>
		</ul>
	</div>
</div>	
</template>

<script>
	import Bscroll from 'better-scroll'
	import {mapMutations} from 'vuex'

	export default {
		name:'CitySearch',
		props:{
			cities:Object			
		},
		data () {
			return {
				keyword:'',
				list: [],
				timer: null
			}
		},
		methods : {
			handleCityClick (city) {
				// this.$store.commit('changeCity',city)
				this.changeCity(city)
				this.$router.push('/')
			},
			...mapMutations(['changeCity'])
		},
		computed : {
			hasNoData() {
				return !this.list.length
			}
		},
		watch : {
			keyword () {
				if(this.timer) {
					clearTimeout(this.timer);
				}
				if(!this.keyword) {
					return this.list = []
				}
				this.timer = setTimeout(() => {
					const result = []
					for (let i in this.cities) {
						this.cities[i].forEach((value) =>{
							if(value.spell.indexOf(this.keyword) > -1 ||
								value.name.indexOf(this.keyword) > -1) {
								result.push(value)
							}
						})
					}
					this.list = result
				},100);
			}
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.search)
		}
	}
</script>

<style lang="stylus" scoped>
	@import '~styles/varibles.style'
	.search
		height:.72rem
		padding:0 .1rem
		background:$bgColor
		.search-input
			box-sizing:border-box
			width:100%
			height:.62rem
			padding:0 .3rem
			line-height:.62rem
			text-align:center
			border-radius:.06rem
			color:#666
	.search-content
		z-index:1
		overflow:hidden
		position:absolute
		top:1.58rem
		left:0
		right:0
		bottom:0
		background:#eee
		.search-item
			line-height:.62rem
			padding-left:.2rem
			background:#fff
			color:#666
</style>